Bug 351263

Summary:	Stabilizer causes jagged line endings without "stabilizer sensors" also enabled
Product:	[Applications] krita	Reporter:	Storm Engineer <storm.anthro>
Component:	Tools/Freehand	Assignee:	Krita Bugs <krita-bugs-null>
Status:	CONFIRMED ---
Severity:	normal	CC:	freebox64, halla
Priority:	NOR
Version:	2.9.4
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	Example of the issue Example source file Screen recording of broken behavior (Video) (Screenshot)

Description Storm Engineer 2015-08-13 16:34:57 UTC

When using stabilizer, if "stabilize sensors" is disabled, line endings will be jagged, as the size will decrease in wild drops rather than smoothly.

Reproducible: Always

Steps to Reproduce:
1. Enable stabilizer, and disble "stabilize sensors"
2. Draw fast strokes with a preset using size dynamics

Actual Results:  
Jagged line endings

Expected Results:  
Smooth line endings

Comment 1 Storm Engineer 2015-08-13 16:36:04 UTC

Created attachment 94016 [details]
Example of the issue

Comment 2 Storm Engineer 2015-08-13 16:36:30 UTC

Created attachment 94017 [details]
Example source file

Comment 3 Storm Engineer 2015-08-13 16:39:30 UTC

Created attachment 94018 [details]
Screen recording of broken behavior

I recorded a comparison between the broken stabilizer and other, workings forms of smoothing and no smoothing.

Comment 4 Halla Rempt 2015-08-14 09:14:59 UTC

Hi Storm,

I can confirm the behaviour, but didn't we add that checkbox exactly to prevent this issue?

Comment 5 Storm Engineer 2015-12-11 06:11:19 UTC

Well, it doesn't happen with weighted smoothing, so it is not supposed to happen I think...

Anyway, just wanted to mention I just tested and the issue is still there with freshly built 2.9 and a Wacom tablet instead of the crappy Genius I used when I reported this.

Comment 6 mvowada 2018-12-01 11:55:06 UTC

Created attachment 116601 [details]
(Video)

I can reproduce this also with Krita 4.2.0-pre-alpha (git 37c4f13) on Ubuntu 14.04 Unity.

Comment 7 mvowada 2018-12-02 10:57:05 UTC

Created attachment 116621 [details]
(Screenshot)

Hi, 
here is a screenshot comparing the results between the "Stabile sensors" option disabled and enabled (Krita 4.2.0-pre-alpha (git 4fb7b5b) and (bottom) Krita 3.3.3. Instant Preview Mode was OFF).